Answers for "how to replace all + from string in js"

js string replaceall

// Chrome 85+
str.replaceAll(val, replace_val);
// Older browsers
str.replace(/val/g, replace_val);

how to replace all the string in javascript when the string is javascript variable

function name(str,replaceWhat,replaceTo){
    var re = new RegExp(replaceWhat, 'g');
    return str.replace(re,replaceTo);
}